If you use windows you will need to build an adapter, its really REALLY easy, but one part you will probably have to get from china, so it will take a week or 2 to arrive, if you use linex and have blutooth on your laptop, you can do this for free...
If you want to build the adapter, I can show you how, but it costs $19 for 1 piece and $1.58 for the other. 7 day shipping for the first is $9 so $28 + $4 (shipping for the $1.58 that comes from china) you could do it cheaper but its uninsurred.
This also allows you to play first person shooter games with a mouse and keyboard on PS3...(works with xbox360 if you use ubuntu operating system on laptop)